// #pragma GCC optimize("Ofast")
// #pragma GCC optimize("unroll-loops")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2")
#include <bits/stdc++.h>
// #define int long long
#define i64 long long
#define pii pair <int, int> 
using namespace std;
inline int read(void) {
    int x=0,sgn=1; char ch=getchar();
    while(ch<48||57<ch) {if(ch==45)sgn=0;ch=getchar();}
    while(47<ch&&ch<58) {x=x*10+ch-48;   ch=getchar();}
    return sgn? x:-x;
}
void write(int x) {
    if(x<0) putchar('-'),x=-x;
    if(x>9) write(x/10);
    putchar(x%10+'0');
}
int n;
char s[1000006];
inline void work() {
    n=read(); int L=1;
    scanf("%s",s+1);
    while(L<=n) {
        int cr=0,cl=0;
        while(s[L]=='R') ++cr,++L;
        while(s[L]=='L') ++cl,++L;
        if(cl!=cr) return puts("Alice"),void();
    }
    return puts("Bob"),void();
}
/*
    write((Ans%p+p)%p); pls
*/
signed main() {
    int T=read();
    while(T--) work();
	return 0;
}